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I am using the following commands for cutting videos using ffmpeg. However, they are presenting weird results.
When I am using the following command, the output video has its frames freezed for starting 1 or 2 seconds and plays smooth later.
ffmpeg -i input.mp4 -vcodec copy -acodec copy -ss 30 -t 45 out.mp4
Whereas, this commands solves the problem of freezed frames but seeking is not accurate as I am using -ss parameter before input.
ffmpeg -ss 30 -i input.mp4 -vcodec copy -acodec copy -t 45 out.mp4
I am looking for help that will let me come up with a solution that will accurately clip the video without freezing frames.
Saqib Rao
Posted 2017-03-08T00:39:08.407
Reputation: 21
Not possible without transcoding. See http://superuser.com/a/1168028/114058
– Gyan – 2017-03-08T04:34:40.253in any way can I clip exact 30 seconds video when seeking doesn't matter but the start point must not coincide with I-Frame – Saqib Rao – 2017-03-08T16:45:58.527
@Mulvya how can I do transcoding to acheive above thing. – Saqib Rao – 2017-03-08T19:04:10.243
Drop the
-vcodec copyin the 2nd command. – Gyan – 2017-03-08T19:06:04.077I tried but output is completely black with audio only. – Saqib Rao – 2017-03-08T19:49:43.563
Please edit your question and include the full, uncut command line output for the commands. (Also the last one you said you've tried.) – slhck – 2017-03-08T19:57:35.187